Location div in the middle - html

Question

This is the code: https://jsfiddle.net/twy161er/6/
HTML:
<div id="top">
Logo. Menu
</div>
<div id="content">
Text Text Text
</div>
<div id="bottom">
Text in the bottom
</div>
CSS:
#top {
width: 100%;
height: 100px;
background-color: red;
}
#bottom {
width: 100%;
height: 100px;
background-color: blue;
margin: 0;
bottom: 0;
left: 0;
overflow: hidden;
position: absolute;
}
#content {
}
I want the "content" div to be in the center and in the middle of the page.
How should I do it?

Answer 1

Create a parent div .main for the three DIV and add a wrap DIV tag for content text and use display table table-row table-cell.
html, body {
height: 100%;
margin: 0;
}
.main {
display: table;
width: 100%;
height: 100%;
}
.top {
height: 0; /* make it dynamic */
background-color: red;
display: table-row;
}
.bottom {
height: 0; /* make it dynamic */
background-color: lime;
display: table-row;
}
.content {
display: table-row;
vertical-align: middle;
background: yellow;
}
.content div {
text-align: center;
vertical-align: middle;
display: table-cell;
}
<div class="main">
<div class="top">
Logo. Menu<br />
Dynamic content
</div>
<div class="content">
<div>Text Text Text</div>
</div>
<div class="bottom">
Text in the bottom<br />
Dynamic content
</div>
</div>
Jsfiddle demo : https://jsfiddle.net/twy161er/15/
Why use display:table? Because the content text always show even if the window height less than 200px; and you get IE8/9 support.

Answer 2

That is pretty simple!
You can make the contents of the #content like this:
<div id="content">
<div>Text Text Text</div>
</div>
Then, all you need to do is add this CSS:
#content {}
#content div {
position: absolute;
padding: 0;
margin: 0;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
Explanation
You firstly absolute your text. Then, you reset the margin and padding of the element <div>. What you do then is, push the inner <div> down by 50% of the page height and push left by 50% of the page width. Then, you have to move it towards the left, 50% of its width, and move it towards the top, 50% of it's height. That way, you can get the exact center of the <div>.
Working example: JSFiddle.

Answer 3

CSS rule "margin: auto" to the #content div should put it on the middle horizontally.
In order to put it in the middle of the screen, try:
#content {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
taken from here How to position a div in the middle of the screen when the page is bigger than the screen
Notice that your top and bottom divs are in absolute position, so no way to tell the #content div to position itself relatively to them.

Answer 4

Your content is missing reference to id "#".
And i hope this is solution to your problem.
#content {
display: table;
margin: 0 auto;
}